<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>06_多重变换</title>
    <style>
        .outer {
            width: 200px;
            height: 200px;
            border: 1px solid black;
            margin: 100px  auto;
            transform-style: preserve-3d;
            perspective: 500px;
            perspective-origin: 102px 102px;
        }
        .inner {
            width: 200px;
            height: 200px;
            background-color: orange;
            transform: rotatey(45deg);
            /* 背部可见性 */
            backface-visibility: hidden;
        } 
    </style>
</head>
<body>
    <div class="outer">
        <div class="inner">你好哇</div>
    </div>
</body>
</html>